Vertical slider sill



FIG. 1 is a left plan view of a vertical slider sill showing our new design.

FIG. 2 is a top, rear perspective view thereof.

FIG. 3 is a top, front perspective view thereof.

FIG. 4 is a bottom, rear perspective view thereof.

FIG. 5 is a bottom, front perspective view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a rear elevation view thereof.

FIG. 8 is a front elevation view thereof; and,

FIG. 9 is a bottom plan view thereof. 

CLAIM The ornamental design for a vertical slider sill, as shown and described. 